hannahhoskings6989
22.12.2019 •
Physics
When two or more substances combine, but each keeps its own properties, the new combination is called a(an)
a) element
b) mixture
c) compound
d) homogeneous substance
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Ответ:
Ответ:
crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis. At that stage each chromosome has replicated into two strands called sister chromatids.
Explanation: